EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92113 MA - EPH Matrix Spike Price on request 8452.13-10MG 2-Phenylbenzimidazole-5-sulfonic acid, neat, Solvent-neat, Unit 10MG, # of units-16, Cas.no. 27503-81-7 Price on request 689756 Desmedipham, 100μg/ml in MeOH, 5ml Price on request